EP2075353A1 - Procédé pour le traitement d'une zone de surface en acier - Google Patents

Procédé pour le traitement d'une zone de surface en acier Download PDF

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Publication number
EP2075353A1
EP2075353A1 EP07123351A EP07123351A EP2075353A1 EP 2075353 A1 EP2075353 A1 EP 2075353A1 EP 07123351 A EP07123351 A EP 07123351A EP 07123351 A EP07123351 A EP 07123351A EP 2075353 A1 EP2075353 A1 EP 2075353A1
Authority
EP
European Patent Office
Prior art keywords
steel
surface area
plasma treatment
treatment
polishing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07123351A
Other languages
German (de)
English (en)
Inventor
Shantanu Bhowmik
Johannes Aaldert Poulis
Rinze Benedictus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technische Universiteit Delft
Original Assignee
Technische Universiteit Delft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technische Universiteit Delft filed Critical Technische Universiteit Delft
Priority to EP07123351A priority Critical patent/EP2075353A1/fr
Publication of EP2075353A1 publication Critical patent/EP2075353A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents

Definitions

  • the invention relates to a method for treatment of a surface area of steel by polishing said surface area and performing a plasma treatment of said surface area.
  • the plasma treatment that is carried out in the method of the invention is performed at at least atmospheric conditions.
  • the method of the invention is carried out with a plasma treatment occurring at a power of approximately 300 watt and for a duration of at least 20 minutes.
  • a preferred exposure time is considered to be 30 minutes.
  • the plasma treatment is carried out at a pressure in the range of 3-5 bar.
  • the polishing to be carried out prior to the plasma treatment is a mechanical polishing so as to remove oxides from the steel surface area.
  • polishing is followed by ultrasonic cleaning for the removal of grease and/or dirt.
  • Fig. 1 the influence is shown of applying atmospheric pressure plasma treatment and low pressure plasma treatment and its effect on the adhesive bond strengths of the steels so treated.
  • the figure also shows a left bar representing the adhesive bond strength of steel which is untreated. What clearly follows from the figure is that an improvement of the adhesive bond strength of steel occurs when a low pressure plasma treatment is applied and that this bond strength may be further increased by applying an atmospheric plasma treatment of such steel.
  • a comparative example of the durability of the adhesive bond strength is shown of a steel that is exposed to atmospheric plasma treatment according to the invention.
  • the figure shows said adhesive bond strength at respectively ambient conditions, low temperature conditions, elevated temperature conditions and under a thermal fatigue test.
  • the adhesive bonds were separately exposed to said low temperature (-196°C), and said elevated temperature (+200°C) for approximately 100 hours, and the thermal fatigue test was carried out by exposing the joints of a steel bonded to another steel surface under 10 cycles of varying loads for a duration of two hours at the above-mentioned temperatures. It can be observed that the adhesive bond strength of the steel retains 96-98% of the bond strength that is present at ambient conditions.
  • Fig. 3 relates to an atmospheric plasma exposed steel surface area
  • Fig. 4 relates to a low pressure plasma exposed steel surface area
  • Fig. 5 relates to an unmodified steel surface area.
  • Both Fig. 3, Fig. 4 and Fig. 5 show for the just-mentioned steels the adhesive bond strength at ambient condition and also when subjected to a high energy radiation with gamma and neutron radiation, and further when exposed to a Ringer's solution at an elevated temperature of 80°C for four weeks.
EP07123351A 2007-12-17 2007-12-17 Procédé pour le traitement d'une zone de surface en acier Withdrawn EP2075353A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07123351A EP2075353A1 (fr) 2007-12-17 2007-12-17 Procédé pour le traitement d'une zone de surface en acier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07123351A EP2075353A1 (fr) 2007-12-17 2007-12-17 Procédé pour le traitement d'une zone de surface en acier

Publications (1)

Publication Number Publication Date
EP2075353A1 true EP2075353A1 (fr) 2009-07-01

Family

ID=39410065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07123351A Withdrawn EP2075353A1 (fr) 2007-12-17 2007-12-17 Procédé pour le traitement d'une zone de surface en acier

Country Status (1)

Country Link
EP (1) EP2075353A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387842A (en) * 1993-05-28 1995-02-07 The University Of Tennessee Research Corp. Steady-state, glow discharge plasma
US5938854A (en) * 1993-05-28 1999-08-17 The University Of Tennessee Research Corporation Method and apparatus for cleaning surfaces with a glow discharge plasma at one atmosphere of pressure
WO2001012350A1 (fr) * 1999-08-16 2001-02-22 The University Of Tennessee Research Corporation Nettoyage de surfaces au moyen d'un plasma haute pression par decharge luminescente sans equilibre thermique
WO2002094455A1 (fr) * 2001-05-18 2002-11-28 Plasma Tech Co., Ltd. Procede et appareil de traitement au plasma
US20040003828A1 (en) * 2002-03-21 2004-01-08 Jackson David P. Precision surface treatments using dense fluids and a plasma
DE102005011887A1 (de) * 2005-03-15 2006-09-21 Linde Ag Verfahren zum Reinigen von Oberflächen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387842A (en) * 1993-05-28 1995-02-07 The University Of Tennessee Research Corp. Steady-state, glow discharge plasma
US5938854A (en) * 1993-05-28 1999-08-17 The University Of Tennessee Research Corporation Method and apparatus for cleaning surfaces with a glow discharge plasma at one atmosphere of pressure
WO2001012350A1 (fr) * 1999-08-16 2001-02-22 The University Of Tennessee Research Corporation Nettoyage de surfaces au moyen d'un plasma haute pression par decharge luminescente sans equilibre thermique
WO2002094455A1 (fr) * 2001-05-18 2002-11-28 Plasma Tech Co., Ltd. Procede et appareil de traitement au plasma
US20040003828A1 (en) * 2002-03-21 2004-01-08 Jackson David P. Precision surface treatments using dense fluids and a plasma
DE102005011887A1 (de) * 2005-03-15 2006-09-21 Linde Ag Verfahren zum Reinigen von Oberflächen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"CLEANING PROCEESES FOR STAINLESS STEEL SURGICAL SUTURE NEEDLES", RESEARCH DISCLOSURE, MASON PUBLICATIONS, HAMPSHIRE, GB, no. 409, 1 May 1998 (1998-05-01), pages 563 - 569, XP000824695, ISSN: 0374-4353 *

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